I have a new installation of SoftEther VPN on a Win 7 machine. Attempting but failing to connect to the VPN server from an iphone on the same LAN.

Here is my setup:
- Local connection (LAN)
- Windows firewall is disabled
- Connecting from an iPhone (IOS 10.2.1)
- L2TP connection type
- "Enable L2TP Server Function" is checked in IPsec Settings
- Preshared key is set and used as "Secret" on the iphone VPN config
- I have a Virtual Hub created with a user, with Auth Type: "Password Auth".
- VPN Server Version 4.22

1. Login into the default vhub (I tried all combinations of defualt server and specifying the server explicitly)
2. Yes these ports (500 and 4500) are forwarded from router to the vpn server (you can see in the server logs they are connecting properly)
3. Yes this port as well (443)